I had that happen to my 9 mm die as well. Contacted Dillon and received a new die in very short order. No hassel of any kind. I did drive out the stuck case and the carbide ring seemed to be intact. I pressed it back in the die and then used a small punch to the base of the die to flare it enough to hold it in there. This is the Stainless steel portion and I did this in quite a few places. Now I have a spare die to use if it ever happens again.
I don't know just how many thousands of cases have been through that die. I do know I will keep buying Dillon products for some time to come. Their no BS warrenty is not just a slogan. I broke mine on a weekend evening so I just E-mailed them. It took probably an extra day to get mine. Still impressive.